Collection: Thread Repair - Size Kits - Keylocking

Thread Repair -> Size Kits -> Keylocking

There are 4 products in the sub-categories of Thread Repair - Size Kits - Keylocking. Browse the Thread Repair - Size Kits - Keylocking products table.

Category Details

A selection of Keylocking Size Kits Thread Repair. Keylocking inserts are used to repair threads by tapping the worn thread to a standard larger thread, twisting the insert into place and then driving in the keys to lock the insert. Also known as keenserts.

Each kit contains an installation tool and the quantity of inserts shown. One size per kit.
Also known as keenserts, keylocking inserts are available in mild steel and stainless steel.
Installation is by drilling out the old thread, countersinking, tapping new thread with a standard tap, screwing the insert until slightly below the surface, then tapping down the keys using the tool supplied and a hammer.

Small Parts & Bearings

Additional resources:

Keysteel Catalogue PDF

A more comprehensive listing may be found in the Thread Repair - Size Kits - Keylocking category on the MBA Minibearings main store.

Internal Thread	External Thread	Length	Inserts Per Kit	Indicative Image
Internal Thread 1/4-20 UNC (6.35mm)	External Thread 7/16-14 UNC (11.11mm)	Length 9.4 mm (Equiv. 0.37 in.)	Inserts Per Kit 8
Material: Steel Deleted Item. Available while stocks last.
Part Number: KLI-0635-KIT (Each) Size Kits Thread Repair - 1/4-20 UNC - 6.35mm - 7/16-14 UNC - 11.11mm - 9.4 mm Keylocking - Steel Insert 1 Available Now \| Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $37.69 AUD Regular price ~~$90.14 AUD~~ Sale price $37.69 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required 1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Internal Thread	External Thread	Length	Inserts Per Kit	Indicative Image
Internal Thread 1/4-20 UNC (6.35mm)	External Thread 7/16-14 UNC (11.11mm)	Length 9.4 mm (Equiv. 0.37 in.)	Inserts Per Kit 8
Material: Steel Deleted Item. Available while stocks last.
Part Number: KLI-0635-KIT (Each) Size Kits Thread Repair - 1/4-20 UNC - 6.35mm - 7/16-14 UNC - 11.11mm - 9.4 mm Keylocking - Steel Insert 1 Available Now \| Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $37.69 AUD Regular price ~~$90.14 AUD~~ Sale price $37.69 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required 1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
KLI-0635-KIT (Each) --- Size Kits Thread Repair - 1/4-20 UNC - 6.35mm - 7/16-14 UNC - 11.11mm - 9.4 mm Keylocking - Steel Insert Sale KLI-0635-KIT (Each) --- Size Kits Thread Repair - 1/4-20 UNC - 6.35mm - 7/16-14 UNC - 11.11mm - 9.4 mm Keylocking - Steel Insert Regular price $37.69 AUD Regular price ~~$90.14 AUD~~ Sale price $37.69 AUD Unit price per Each Excludes GST and overseas Taxes & Duties 1 Available Now Sale
Internal Thread 5/16-18 UNC (7.94mm)	External Thread 1/2-13 UNC (12.7mm)	Length 10.9 mm (Equiv. 0.429 in.)	Inserts Per Kit 7
Material: Steel
Part Number: KLI-0794-KIT (Each) Size Kits Thread Repair - 5/16-18 UNC - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert Out of Stock \| Backorder Now \| Orders can be expected around Mon, Dec 29, 2025 Regular price $76.86 AUD Regular price ~~$92.24 AUD~~ Sale price $76.86 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Internal Thread 5/16-18 UNC (7.94mm)	External Thread 1/2-13 UNC (12.7mm)	Length 10.9 mm (Equiv. 0.429 in.)	Inserts Per Kit 7
Material: Steel
Part Number: KLI-0794-KIT (Each) Size Kits Thread Repair - 5/16-18 UNC - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert Out of Stock \| Backorder Now \| Orders can be expected around Mon, Dec 29, 2025 Regular price $76.86 AUD Regular price ~~$92.24 AUD~~ Sale price $76.86 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
KLI-0794-KIT (Each) --- Size Kits Thread Repair - 5/16-18 UNC - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert Sale KLI-0794-KIT (Each) --- Size Kits Thread Repair - 5/16-18 UNC - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert Regular price $76.86 AUD Regular price ~~$92.24 AUD~~ Sale price $76.86 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Internal Thread 5/16-24 UNF (7.94mm)	External Thread 1/2-13 UNC (12.7mm)	Length 10.9 mm (Equiv. 0.429 in.)	Inserts Per Kit 7
Material: Steel Deleted Item. Available while stocks last.
Part Number: KLI-0794F-KIT (Each) Size Kits Thread Repair - 5/16-24 UNF - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert 1 Available Now \| Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $39.56 AUD Regular price ~~$94.90 AUD~~ Sale price $39.56 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required 1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Internal Thread 5/16-24 UNF (7.94mm)	External Thread 1/2-13 UNC (12.7mm)	Length 10.9 mm (Equiv. 0.429 in.)	Inserts Per Kit 7
Material: Steel Deleted Item. Available while stocks last.
Part Number: KLI-0794F-KIT (Each) Size Kits Thread Repair - 5/16-24 UNF - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert 1 Available Now \| Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $39.56 AUD Regular price ~~$94.90 AUD~~ Sale price $39.56 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required 1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
KLI-0794F-KIT (Each) --- Size Kits Thread Repair - 5/16-24 UNF - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert Sale KLI-0794F-KIT (Each) --- Size Kits Thread Repair - 5/16-24 UNF - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert Regular price $39.56 AUD Regular price ~~$94.90 AUD~~ Sale price $39.56 AUD Unit price per Each Excludes GST and overseas Taxes & Duties 1 Available Now Sale
Internal Thread 3/8-16 UNC (9.53mm)	External Thread 9/16-12 UNC	Length 12.7 mm (Equiv. 0.5 in.)	Inserts Per Kit 6
Material: Steel Deleted Item. Available while stocks last.
Part Number: KLI-0953-KIT (Each) Size Kits Thread Repair - 3/8-16 UNC - 9.53mm - 9/16-12 UNC 12.7 mm Keylocking - Steel Insert 1 Available Now \| Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $40.39 AUD Regular price ~~$96.89 AUD~~ Sale price $40.39 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required 1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Internal Thread 3/8-16 UNC (9.53mm)	External Thread 9/16-12 UNC	Length 12.7 mm (Equiv. 0.5 in.)	Inserts Per Kit 6
Material: Steel Deleted Item. Available while stocks last.
Part Number: KLI-0953-KIT (Each) Size Kits Thread Repair - 3/8-16 UNC - 9.53mm - 9/16-12 UNC 12.7 mm Keylocking - Steel Insert 1 Available Now \| Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $40.39 AUD Regular price ~~$96.89 AUD~~ Sale price $40.39 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required 1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
KLI-0953-KIT (Each) --- Size Kits Thread Repair - 3/8-16 UNC - 9.53mm - 9/16-12 UNC 12.7 mm Keylocking - Steel Insert Sale KLI-0953-KIT (Each) --- Size Kits Thread Repair - 3/8-16 UNC - 9.53mm - 9/16-12 UNC 12.7 mm Keylocking - Steel Insert Regular price $40.39 AUD Regular price ~~$96.89 AUD~~ Sale price $40.39 AUD Unit price per Each Excludes GST and overseas Taxes & Duties 1 Available Now Sale

Small Parts & Bearings

Collection: Thread Repair - Size Kits - Keylocking

Category Details

Filter:

KLI-0635-KIT (Each) --- Size Kits Thread Repair - 1/4-20 UNC - 6.35mm - 7/16-14 UNC - 11.11mm - 9.4 mm Keylocking - Steel Insert

KLI-0635-KIT (Each) --- Size Kits Thread Repair - 1/4-20 UNC - 6.35mm - 7/16-14 UNC - 11.11mm - 9.4 mm Keylocking - Steel Insert

KLI-0794-KIT (Each) --- Size Kits Thread Repair - 5/16-18 UNC - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert

KLI-0794-KIT (Each) --- Size Kits Thread Repair - 5/16-18 UNC - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert

KLI-0794F-KIT (Each) --- Size Kits Thread Repair - 5/16-24 UNF - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert

KLI-0794F-KIT (Each) --- Size Kits Thread Repair - 5/16-24 UNF - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert

KLI-0953-KIT (Each) --- Size Kits Thread Repair - 3/8-16 UNC - 9.53mm - 9/16-12 UNC 12.7 mm Keylocking - Steel Insert

KLI-0953-KIT (Each) --- Size Kits Thread Repair - 3/8-16 UNC - 9.53mm - 9/16-12 UNC 12.7 mm Keylocking - Steel Insert

Country/region

Country/region

Small Parts & Bearings

Collection: Thread Repair - Size Kits - Keylocking

Category Details

Filter

Filter

Subscribe to our emails